Door attachement



' Oct. 2 1923. A. OLSON ET AL DOOR ATTACHMENT Filed April. 17. 1922" Fi1 l li J22 r/eie/Zvm,

A26! 011012 A Z/T d flaw-Z- and are pivotally connected b means ofsurround the pipe 12, said extension having a bifurcation 15'. of properwidth to freely receive the intermediate keeper 7 as shown in Figure 1.The plate is heldpositioned on the pipe by the central notch 15" whichlat ter loosely receives the regular screw 14' of the keeper.

The end of the shaft which extends beyond the edge of the door is ofreduced diameter to form the shoulder 16 and the stub 16", said shoulderbeing flush with the edge of the door. Jour'naled at its lower extremityon said st'ub,'is the upwardly extending "collapsible knee 17, said kneecomprising the lower shaft engaging member 17, pivoted on saids"tub,.and the upper member 17,,

pivoted onthe stub 18 whichlatter is parallel with the shaft 9. The studis carried by a bracket 19 which is secured to the door as by meansof'the screws 19' The mom-- hereof th knee converge toward the door thepivot pin 20, so that when the closure plate is moved upward the kneewill bend and "cause the joint thereof to pass an appreciable distanceinwarchy over the edge of the door (see Fig. 2) As the stub 16 andthe's'tud 18 extend beyond the edge offthe door, the'joint offhe knee uon closing the door, will engage with theouter face of the ja'mb member1 (Fi 6) wherebythe knee members will straighten out as hown in dottedlines in Fig'. 2, and thereby cause the closure plate to seat upon thefloor as shown at the right in Figure 1. V

For the purpose of holding the plate normally in raised position, the'extensile coil spring 21 is provided, the latter being connected understress to opposite ends of the knee f In operation, a closing movementof the door will straighten the kne'e in opposition to the spring asstated in the foregoing, the

door-being held closed by the lock barl Upon releasing the lock bar theknee 17,un-

7 der the influence of the spring 21, will an- ,toinaticall'y assist inopening'the door in" its bendlng ut movement, e'aii'slng the gears tosimultaneously roll upwardly on their "respective racks and thus ra sethe closure being guided by the @We claim: Y.

keepers :7;

' 1. lnga structure of the class described, a

combination with a door and the door frame therefor h aving'arabbetto'recei'v'e the door,

of vertically.disposed toothed racks fixed in horizontal alinement onthe door,fa shaft, gears fixedly carried by said shaft in meshrespectively with said racks, a closure plate supported by said shaft,keepers for guiding said shaft to hold said gears in mesh with saidracks, said keepers mounted to slide to a predetermined degree to limitthen'pward movement of said plate, and a collapsible the plate kneehavingmeans whereby to be yieldingly held in normal collapsed state,said knee being pivotally connected at its upper end to the door and atits lower end to said shaft, the joint of said knee being normally ,located over the outer edge of the door to engage with the door frame in aclosing movement ofthe door to cause said knee to straighten out whenthe door is seated in the rabbet of the frame.

[2. In a device of the class described, the combination with a door anddoor/frame, said frame having a rab'bet to receive the door, of aclosure plate slidable upwardly from'the floor, keepers looselyoverlapping said plate and mounted on the door toslide verticallythereon, a horizontal shaft rotatably supported on sa'id'k'eepers andconnectof the door, totliereby straighten out said knee when the doorisseated in said rabbet, V and means including gears and racks incoacting relation, operatively' connecting the door to said shaftwhereby thelatter will move vertically in parallelism with the floorwhen said knee is actuated. V

'3. In a device of the class described, the combination with a door anddoor frame of a closure plate adapted to extend below the door andengage the floor when the door is closed, supporting means carried byt-he door operatively connected to said plate,

said supporting means including a plurality of racks secured to the doorand a horizontal shaft projecting at one end beyond the door andcarrying gears in mesh with said racks,

said shaft .being effective responsive to an upward pull thereon toraise said plate in parallelism from the floor, and spring actumovementof the door to impart alowering movementto said closure plate.

I ated means ,operatively connected to the pro v ect1ng end of'saidshaft and door, said 4. Ina device of the classd'escribed to be attachedto the face of a door, .the combination of a shaft adapted to be'arranged 'parallel to the floor, a closure plate 'hung on' said shaftadapted to extend to the floor,

-mechanism adapted "to connect said shaft to c the face of the door forrendering said shaft vertically movable in parallelism with the 1 floor,a'link adapted'tobe pivoted on the door and to extend downwardly and inwardly beyond the face of the door, adjacent the edge thereof, a linkpivoted to the lower end of saidlink adapted to extend downwardly tosaid shaft and having pi'v- 5. In a device'of the class described tobe 7attached to a door, the combination of a hinged knee adapted to bend ina vertical plane at right angles to the face of the door and adapted tobe pivoted at its upper end to the door adjacent the outer vertical edgethereof, the joint of the knee being normally located'adjacentlyopposite the outer edge of the door, a spring adapted to yieldingly holdsaid knee bent, a shaft pivoted to 15 the lower end of said knee andadapted to be arranged parallel to the floor, and norand tubing andrevolubly mally extending from: side to side ofthe I door, a closureplate adapted tofextend from the floor to said shaftand having loosecon: nection with the latter, a gear carried by said shaft adjacent eachend thereof','a rack for each gear normally secured to the door,

a tubeloosely surrounding said shaft be-" tween said gears, and keepersnormally slidably mounted on the door to slide vertically thereoverwhile extending over said plate latter.

supporting the V In testimony whereof we affix our signa 1 AXEL oLsoN.ALFRED HAST.

tures.

